Don't use those on a baby! Put treats on the 'offending' object (while it's off) to introduce. Distract while it's on with focus, rewards, etc. I had one boy who chased the vacuum. However, it wasn't aggression, he was just a jerk. Didn't start that until he was several years old. Ruined one!
So I started correcting him for it. However, if I wasn't standing there... he'd do it anyway. Like I said, he was a jerk. This is a baby who needs some confidence that everything isn't going to eat it.